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Electrowetting-driven variable-focus liquid lens with configurable initial focal length

A technology of liquid lens and focal length, which is applied in lenses, instruments, optics, etc., can solve the problem that the initial focal length cannot be changed, and achieve the effect of satisfying response time, flexible size, and focal length change

Pending Publication Date: 2021-12-21
渤远科学仪器(镇江)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the clear aperture of the side wall of this type of lens is consistent, the initial focal length cannot be changed

Method used

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  • Electrowetting-driven variable-focus liquid lens with configurable initial focal length
  • Electrowetting-driven variable-focus liquid lens with configurable initial focal length
  • Electrowetting-driven variable-focus liquid lens with configurable initial focal length

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] like Figure 4 As shown, an electro-wetting driven variable liquid lens with configurable initial focal length, its conductive inner core body 1 is a spherical surface formed by rotating a circle or a part of a circle, and its internal structure is the same as the above-mentioned structure. First make the spherical conductive inner core body 1, the conductive inner core body 1 is made of conductor copper, first make a spherical mold protruding outward (you can also make a spherical mold concave inward), then melt the conductive copper, and pour the liquid copper into the mold Among them, a complete conductive inner core body 1 can be formed after the liquid copper is cooled. Then, evenly coat the inner wall of the main body of the conductive inner core with a 3-micron thick epoxy resin insulating coating, and then coat the insulating layer with a layer of polyolefin hydrophobic layer to play the role of hydrophobic modification. The lower part of the conductive inner c...

Embodiment 2

[0037] like Figure 5 As shown, an electro-wetting driven variable liquid lens with configurable initial focal length, its conductive inner core body 1 is an ellipse or an ellipsoid formed by rotating part of an ellipse, and its internal structure is the same as the above-mentioned structure. Firstly, the ellipsoid conductive inner core body 1 is made, the conductive inner core body 1 is made of conductive aluminum, and the conductive inner core body protruding outward is made, processed by a lathe, and an aluminum conductive inner core body 1 is processed by a lathe, and then the conductive inner core body 1 is processed in the conductive The inner wall of the inner core body 1 is evenly coated with a layer of 3 micron thick alumina ceramic insulation coating, and after the insulating layer is coated, a layer of polycarbonate hydrophobic layer is coated to play the role of hydrophobic modification. The lower part of the conductive inner core body 1 is sealed with ITO conductive...

Embodiment 3

[0039] like Image 6 As shown, an electro-wetting driven variable liquid lens with configurable initial focal length, its conductive inner core body 1 is a hyperbola or a hyperboloid formed by rotating a part of a hyperbola, and its internal structure is the same as the above-mentioned structure. Firstly, the hyperboloid conductive inner core main body 1 is made, and the conductive inner core main body 1 adopts conductive iron. Divide the conductive inner core main body 1 into upper and lower m pieces and make them separately, process m pieces of small conductive inner core main bodies respectively with a lathe using the method of embodiment 2, and then coat ceramic polymer insulating coating, and separately coat the insulating layer to make the insulation The layer is more evenly applied. When coating the insulating layer on each small piece of conductive inner core body, the connection of the conductive inner core body can be coated with an insulating layer or not coated wi...

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Abstract

The invention discloses an electrowetting-driven variable-focus liquid lens with a configurable initial focal length, and relates to the technical field of photoelectric imaging, photoelectric sensing and optical information processing devices. The lens comprises a conductive inner core main body, a transparent upper cover plate and a transparent lower cover plate, the surface of an inner cavity of the conductive inner core main body is a curved surface formed by rotating a conic curve, an insulating dielectric layer is arranged on the surface, and a hydrophobic layer is arranged outside the dielectric layer; the inner cavity is sealed by the transparent upper cover plate and the transparent lower cover plate to form a lens cavity, transparent conductive liquid and insulating liquid which have different refractive indexes and are insoluble are stored in the lens cavity to serve as lens materials, the initial contact position of a bent interface between the liquid and the surface of the inner cavity can be adjusted according to the volume ratio of the two kinds of liquid, and therefore the configurable initial focal length is achieved. By means of the design, the requirement for response time can be met, and the requirement for focal length change can also be met.

Description

technical field [0001] The invention relates to the technical field of photoelectric imaging, photoelectric sensing and optical information processing devices, in particular to an electro-wetting driven zoom liquid lens with a configurable initial focal length. Background technique [0002] The electrowetting liquid zoom lens is a novel zoom lens, which belongs to the technical field of photoelectric imaging, photoelectric sensing and optical information processing devices. Traditional optical zoom lenses are usually composed of multiple sets of independent convex / concave solid lenses, some of which are fixed, and some of which can slide back and forth along the optical axis. The focal length of the lens system is changed by moving the lens back and forth. This kind of lens system has many shortcomings due to mechanical drives, such as large volume and inconvenient operation. Liquid lens is an emerging technology in recent years, which has advantages that traditional solid ...

Claims

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Application Information

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IPC IPC(8): G02B3/14G02B26/00
CPCG02B3/14G02B26/005
Inventor 陈陶邓玲玲
Owner 渤远科学仪器(镇江)有限公司
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